1.

5+√3upon 7-4√3 -5+√3 upon 7+4√3

Answer»

ANSWER:

do cross multiplication

Step-by-step explanation:

((5+√3)*(7+4√3)) - ((5+√3)*(7-4√3)) / (7-4√3)*(7+4√3)

= 5+√3*(7+4√3-7+4√3) / 7²-(4√3)²

= (5+√3)(2*4√3) / 49-48

= (5*8√3)+(√3*8√3)

= 40√3+24

tried ROUGHLY...hope this will HELP



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